If the supply voltage is quadrupled while resistance stays the same, how does the current change?

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Multiple Choice

If the supply voltage is quadrupled while resistance stays the same, how does the current change?

Explanation:
Current follows Ohm’s law: I = V / R. If the resistance stays the same, current is directly proportional to voltage. Quadrupling the supply voltage makes the current four times larger because I2 = (4V)/R = 4(V/R) = 4I1. So the current quadruples. This also means power would rise by a factor of four, since P = VI.

Current follows Ohm’s law: I = V / R. If the resistance stays the same, current is directly proportional to voltage. Quadrupling the supply voltage makes the current four times larger because I2 = (4V)/R = 4(V/R) = 4I1. So the current quadruples. This also means power would rise by a factor of four, since P = VI.

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